Don't most sewing machines come with a 25 year warranty or guarantee if you pay for it. My original machine came with a 1 year of everything covered no matter what, when you purchase the 3 year extended warranty. That was 38 years ago, still going strong. Elna's are good machines to buy.
Do you want to quilt with it or just do basic sewing or embroidery with it? Many sewing machines have the advantage of a sewing machine and when you attach its embroidery module to it, then it is a super quality embroidery machine. There are Bernina and Brother machines that are top quality, even the lower end of the expensive ones would be an excellent purchase. Some sewing machines are not oiled as they have computer parts in them, so no oiling.
If you purchase a machine from a quilt or specific fabric shop, you get the free lessons of about 6 hours on the specific advantages of the machine your purchased. That is extremely helpful and you can repeat the classes for no charge. from, Debbie, Phoenix, AZ